Dancing with the Stars Lineup Officially Announced

The season seven Dancing with the Stars cast was officially announced Monday on ABC’s Good Morning America, and after much Internet speculation on who would be joining the show, there are plenty of surprises.

Dancing producer Conrad Green tells PEOPLE that he’s anticipating this season to be one of the show’s best yet. He says, “tons of might be contenders right down to the last week. That’s what want … lots of competition and unpredictable things happening.” What’s sure to also spice up the competition is the return of pro dancer Maksim Chmerkovskiy, who took last season off. Also, three new dancers will join the show, including Corky Ballas (father of season six champ Mark Ballas), Lacey Schwimmer of 2007’s So You Think You Can Dance, and U.S. Amateur 10 Dance Champion Inna Brayer.

Dancing, which is nominated for eight primetime Emmys this year, kicks off its seventh season on Monday, Sept. 22, on ABC.

“We thought we’d focus on good characters and lots of things could happen. It’s a show that makes itself in some ways,” says Green, adding this bit of advice to fans: “Sit back and get ready for the ride.” –Monica Rizzo and Liza Hamm

Here’s the rundown of celebrity contestants and their professional dance partners ready to mambo for the mirror-ball trophy: